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Areal vs Null - What's the difference?

areal | null |

As nouns the difference between areal and null

is that areal is area (pocket of land) while null is zero, nil; the cardinal number before einn.

areal

English

Adjective

(-)
  • Of or pertaining to an area.
  • areal interstices — the areas or spaces inclosed by the reticulate vessels of leaves
  • * 2004 , Scott Mueller, Upgrading and Repairing Laptops , page 307,
  • Areal' density is often used as a technology growth-rate indicator for the hard disk drive industry. '''''Areal density is defined as the product of the linear bits per inch (bpil, measured along the length of the tracks around the disk, multiplied by the number of tracks per inch (tpi), measured radially on the disk (see Figure 9.1).
  • * 2009 , Sydney Lou Bonnick, Bone Densitometry in Clinical Practice: Application and Interpretation , page 157,
  • It should be clear then, that BMD[Bone Mineral Density] measurements with DXA[Dual-energy X-ray Absorptiometry] are two-dimensional or areal' measurements, whereas BMD measurements with QCT[Quantitative Computed Tomography] are three-dimensional or volumetric. Because DXA measurements are ' areal , bone size can affect the apparent BMD.
  • * 2010 , Tarek Ahmed, Reservoir Engineering Handbook , page 985,
  • The areal sweep efficiency EA is defined as the fraction of the total flood pattern that is contacted by the displacing fluid.

    null

    English

    Noun

    (en noun)
  • A non-existent or empty value or set of values.
  • Zero]] quantity of [[expression, expressions; nothing.
  • (Francis Bacon)
  • Something that has no force or meaning.
  • (computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.
  • (computing) the attribute of an entity that has no valid value.
  • Since no date of birth was entered for the patient, his age is null .
  • One of the beads in nulled work.
  • (statistics) null hypothesis
  • Adjective

    (en adjective)
  • Having no validity, "null and void"
  • insignificant
  • * 1924 , Marcel Proust, Within a Budding Grove :
  • In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.
  • absent or non-existent
  • (mathematics) of the null set
  • (mathematics) of or comprising a value of precisely zero
  • (genetics, of a mutation) causing a complete loss of gene function, amorphic.
  • Derived terms

    * nullity

    Verb

    (en verb)
  • to nullify; to annul
  • (Milton)

    See also

    * nil ----